Home / 215,617.32-323,068.42-131,121.90

Finding the Fourth Proportional to 215,617.32, 323,068.42 and 131,121.90

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Solution

The fourth proportional to 215,617.32, 323,068.42 and 131,121.90 is: 196,465.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,617.32 : 323,068.42 = 131,121.90 : x
  2. Step 2: Convert to fraction form
    215,617.32/323,068.42 = 131,121.90/x
  3. Step 3: Cross multiply
    215,617.32x = 323,068.42 × 131,121.90
  4. Step 4: Simplify right side
    215,617.32x = 42,361,345,060.40
  5. Step 5: Solve for x
    x = 42,361,345,060.40/215,617.32
  6. Step 6: Final answer
    x = 196,465.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.